v3.22.4
Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Mar. 31, 2022
Cash flows from operating activities:          
Net income $ 52,618 $ 47,725 $ 62,869 $ 44,280  
Adjustments to reconcile net income to cash provided by operating activities, net of the effects of acquisitions:          
Depreciation and amortization     64,302 72,047  
Loss on extinguishment of debt     0 596  
Operating lease right-of-use assets     7,984 7,589  
Loss on disposal of fixed assets     47 2  
Share-based compensation expense     47,225 43,381  
Change in fair value of contingent consideration     0 (837)  
Deferred income taxes     (38,435) (11,093)  
Other losses (gains)     9 (21)  
Changes in assets and liabilities          
Accounts receivable and unbilled costs     (67,101) (36,211)  
Inventories     8,323 (1,265)  
Prepaid expenses and other assets     4,279 (1,031)  
Accounts payable     (7,129) 844  
Accrued compensation and other expenses     (7,804) (13,438)  
Operating lease liabilities     (9,061) (8,855)  
Income taxes payable     (2,675) (1,861)  
Deferred revenue     (18,910) 46,260  
Net cash provided by operating activities     43,923 140,387  
Cash flows from investing activities:          
Purchase of marketable securities     (100,265) (11,343)  
Proceeds from sales and maturity of marketable securities     103,152 15,264  
Purchase of fixed assets     (8,381) (7,004)  
Purchase of intangible assets     (161) 0  
Decrease in deposits     8 28  
Net cash used in investing activities     (5,647) (3,055)  
Cash flows from financing activities:          
Issuance of common stock under stock plans     2 2  
Treasury stock repurchases, including accelerated share repurchases     (150,039) (35,652)  
Tax withholding on restricted stock units     (19,187) (15,246)  
Payment of debt issuance costs     0 (3,660)  
Repayment of long-term debt     (150,000) (350,000)  
Proceeds from issuance of long-term debt     0 350,000  
Collection of contingent consideration     0 837  
Net cash used in financing activities     (319,224) (53,719)  
Effect of exchange rate changes on cash and cash equivalents     (3,169) (2,684)  
Net (decrease) increase in cash and cash equivalents     (284,117) 80,929  
Cash and cash equivalents, beginning of period     636,161 467,176 $ 467,176
Cash and cash equivalents, end of period $ 352,044 $ 548,105 352,044 548,105 $ 636,161
Supplemental disclosures:          
Cash paid for interest     5,351 3,716  
Cash paid for income taxes     47,294 24,677  
Non-cash transactions:          
Transfers of inventory to fixed assets     1,371 2,657  
Additions to property, plant and equipment included in accounts payable     622 361  
Issuance of common stock under employee stock plans     $ 6,539 $ 6,890