Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 26,324	$ 25,006
Accounts receivable, net	15,519	16,269
Receivable from sale of HSOR business	0	2,501
Contract assets	2,612	2,759
Inventory, net	11,191	10,294
Prepaid expenses and other current assets	1,575	1,287
Total current assets	57,221	58,116
Property and equipment, net	3,306	3,466
Intangible assets, net	9,853	10,194
Goodwill	10,542	10,542
Long-term contract assets	486	449
Other assets	2,009	2,341
Deferred tax asset	1,542	1,416
Total assets	84,959	86,524
Current liabilities:
Accounts payable	2,490	2,787
Accrued liabilities	9,243	10,369
Contract liabilities	3,569	3,888
Total current liabilities	15,302	17,044
Other long-term liabilities	1,880	2,011
Total liabilities	17,182	19,055
Commitments and contingencies (Note 13)
Stockholders’ equity:
Common stock, par value $0.001, 100,000,000 shares authorized, 32,126,368 and 31,788,896 shares issued, 30,486,577 and 30,149,105 shares outstanding at March 31, 2020 and December 31, 2019, respectively	32	32
Treasury stock at cost, 1,639,791 shares at March 31, 2020 and December 31, 2019	(4,337)	(4,337)
Additional paid-in capital	89,446	88,022
Accumulated deficit	(17,364)	(16,248)
Total stockholders’ equity	67,777	67,469
Total liabilities and stockholders’ equity	$ 84,959	$ 86,524