v3.25.4
Note 11 - Real Estate Development - Summary of Equity Method Investments (Details) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Current assets $ 25,043,269 $ 24,412,677  
Noncurrent assets 87,537,811 85,510,105  
Current liabilities 9,629,249 10,673,728  
Noncurrent liabilities 19,073,783 15,160,380  
Joint ventures' equity 83,878,048 84,088,674 $ 81,796,597
CPHC share of joint ventures' equity (8,521,464) (5,016,198)  
Net revenues from external customers 59,567,585 61,562,288  
Net income (529,431) 2,112,842  
Income (Loss) from Equity Method Investments (5,242,852) (5,467,771)  
CPHC's dividends received from joint ventures (82,861) (36,480)  
Total Equity Method Investments [Member]      
Net revenues from external customers 8,037,249 6,208,696  
Net income (18,545,508) (19,972,811)  
Income (Loss) from Equity Method Investments (5,242,852) (5,467,771)  
CPHC's dividends received from joint ventures (82,861) (36,480)  
Doran Canterbury I Joint Venture [Member]      
CPHC share of joint ventures' equity (7,755,000) (5,016,000)  
Net revenues from external customers 1,777,521 2,172,608  
Net income (9,996,550) (12,964,134)  
Income (Loss) from Equity Method Investments (2,739,055) (3,551,980)  
CPHC's dividends received from joint ventures 0 0  
Doran Canterbury II [Member]      
CPHC share of joint ventures' equity (766,000) 0  
Net revenues from external customers 5,968,626 4,015,928  
Net income (8,048,678) (7,021,446)  
Income (Loss) from Equity Method Investments (2,205,338) (1,923,491)  
CPHC's dividends received from joint ventures 0 0  
Other Investment [Member]      
Net revenues from external customers 291,102 20,160  
Net income (500,280) 12,769  
Income (Loss) from Equity Method Investments (298,460) 7,700  
CPHC's dividends received from joint ventures (82,861) (36,480)  
Total Equity Method Investments [Member]      
Current assets 6,306,889 14,505,405  
Noncurrent assets 139,607,148 142,521,390  
Current liabilities 77,028,627 10,175,889  
Noncurrent liabilities 89,001,340 147,212,092  
Joint ventures' equity (20,115,930) (361,146)  
CPHC share of joint ventures' equity (3,365,820)    
CPHC share of joint ventures' equity   (1,959,893)  
CPHC share of joint ventures' equity   1,959,893  
Doran Canterbury I Joint Venture [Member]      
Current assets 5,779,528 11,593,489  
Noncurrent assets 53,053,492 56,250,927  
Current liabilities 72,325,450 5,885,368  
Noncurrent liabilities 14,567,290 79,664,237  
Joint ventures' equity (28,059,720) (17,705,189)  
CPHC share of joint ventures' equity (7,755,253) (5,016,198)  
Doran Canterbury II [Member]      
Current assets 456,519 411,006  
Noncurrent assets 72,925,034 78,755,486  
Current liabilities 4,693,064 4,140,521  
Noncurrent liabilities 69,259,050 67,547,855  
Joint ventures' equity (570,561) 7,478,156  
CPHC share of joint ventures' equity (766,211)    
CPHC share of joint ventures' equity   (1,439,126)  
CPHC share of joint ventures' equity   1,439,126  
Other Investment [Member]      
Current assets 70,842 2,500,910  
Noncurrent assets 13,628,622 7,514,977  
Current liabilities 10,113 150,000  
Noncurrent liabilities 5,175,000 0  
Joint ventures' equity 8,514,351 9,865,887  
CPHC share of joint ventures' equity 5,155,644 (5,536,965)  
CPHC share of joint ventures' equity (5,155,644) 5,536,965  
Total Equity Method Investments 1 [Member]      
Gross profit (loss) 3,176,376 1,902,942  
Doran Canterbury I Joint Venture 1 [Member]      
Gross profit (loss) (315,508) (310,841)  
Doran Canterbury II 1 [Member]      
Gross profit (loss) 3,280,880 2,299,285  
Other Investment 1 [Member]      
Gross profit (loss) $ 211,004 $ (85,502)