CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net loss from operations		$ (4,136)	$ (15,836)
Adjustments to reconcile net loss from operations to net cash provided by (used in) operations:
Depreciation and amortization of intangible assets		4,043	4,582
Loss on disposal of assets		1	19
Gain on sale of equity-method investment		(14,810)
Deferred tax benefit		729	(2,194)
Stock-based compensation		2,613	2,634
Changes in operating assets and liabilities:
Accounts receivable		14,798	12,009
Allowance for doubtful accounts		631	(988)
Inventories, net		(465)	3,585
Contract assets		(1,033)	1,974
Accounts payable		1,202	1,280
Income taxes payable		(1,608)	(2,652)
Accrued expenses		(3,454)	3,660
Deferred compensation		(764)	(1,031)
Deferred revenue		(7,160)	(931)
Other assets and liabilities		(1,871)	(4,927)
Net cash provided by (used in) operating activities		(11,284)	1,184
Cash flows from investing activities:
Purchase of short term investments		(15,812)	(32,253)
Maturities of short term investments		30,550	16,100
Additions to property and equipment		(1,039)	(1,208)
Additions to intangible assets		(13)	(17)
Sale of equity-method investment		(18,874)
Net cash provided by (used in) investing activities		32,560	(17,378)
Cash flows from financing activities:
Repurchase of common stock		(5,721)	(2,908)
Tax payments for restricted stock issuances		(722)	(2,230)
Net cash used in financing activities		(6,443)	(5,138)
Effect of exchange rate changes on cash		(631)	(511)
Net increase (decrease) in cash		14,202	(21,843)
Cash, cash equivalents, and restricted cash, beginning of period		64,228	89,241
Cash, cash equivalents, and restricted cash, end of period	[1]	78,430	67,398
Supplemental cash flow disclosures:
Restricted Cash		$ 800	$ 900

[1] End of period cash, cash equivalents, and restricted cash includes $0.8 million and $0.9 million of restricted cash at June 30, 2022 and June 30, 2021, respectively.