CONSOLIDATED BALANCE SHEETS - USD ($)	Mar. 31, 2026	Dec. 31, 2025
Current assets
Cash and cash equivalents	$ 24,339,602	$ 31,174,880
Restricted Cash	2,204,439	2,200,096
Short-term investments	10,033,654	0
Accounts receivable, net (Note 4)	5,313,769	11,549,718
Inventories, net (Note 5)	6,766,659	5,420,439
Prepaid expenses and other current assets	730,002	472,884
Total current assets	49,388,125	50,818,017
Property and equipment, net	505,504	674,654
Operating lease right-of use assets	1,169,837	1,216,871
Deposits and other	35,073	38,093
Intangible assets, net (Note 7)	73,908	73,908
Total Assets	51,172,447	52,821,543
Current liabilities
Accounts payable	1,792,922	1,716,389
Accrued expenses and other current liabilities (Note 6)	2,467,379	3,630,130
Current portion of operating lease liabilities (Note 9)	230,075	219,097
Current liabilities of discontinued operations	157,274
Total current liabilities	4,647,650	5,565,616
Operating lease liabilities, net of current portion (Note 10)	1,186,643	1,249,862
Total liabilities	5,834,293	6,815,478
Commitments and contingencies (Note 10)
Stockholders’ equity
Common stock, $0.0001 par value; 50,000,000 shares authorized; 24,769,017 and 24,583,775 shares issued and outstanding	2,477	2,458
Additional paid-in capital	62,841,899	62,968,973
Accumulated other comprehensive loss	(20,993)
Accumulated deficit	(17,485,229)	(16,965,367)
Total stockholders’ equity	45,338,154	46,006,064
Total Liabilities and Stockholders' Equity	$ 51,172,447	$ 52,821,543

Deposits and other noncurrent.

No definition available.

Name:	oss_DepositsAndOtherNoncurrent
Namespace Prefix:	oss_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).