Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 18,050	$ 34,596
Marketable securities	25	8,319
Accounts receivable, net of allowance for doubtful accounts of $2,685 and $2,852 as of December 31, 2018 & December 31, 2017, respectively	29,663	28,316
Inventories	22,942	22,732
Prepaid expenses and other current assets	3,494	3,816
Current contract assets	3,566	0
Total current assets	77,740	97,779
Property and equipment, less accumulated depreciation of $48,797 and $51,099 as of December 31, 2018 & December 31, 2017, respectively	53,248	43,521
Intangible assets, less accumulated amortization of $24,703 and $20,656 as of December 31, 2018 & December 31, 2017, respectively	10,518	15,120
Goodwill	32,213	33,872
Other non-current assets	6,736	5,927
Non-current contract assets	6,971	0
Non-current deferred income tax asset	226	20
Total assets	187,652	196,239
Current liabilities:
Accounts payable	17,726	15,736
Accrued compensation and employee-related expenses	5,167	5,358
Accrued other	10,964	9,210
Accrued product warranty costs	1,916	2,074
Deferred revenue	0	6,919
Current portion of long-term debt	9,928	2,482
Contract liabilities	9,193	0
Liability for uncertain tax positions	1,116	1,570
Total current liabilities	56,010	43,349
Other long-term liabilities	1,920	19
Long-term contract liabilities	9,070	0
Long-term debt, excluding current portion	19,437	44,572
Non-current deferred income tax liability	1,700	2,634
Total liabilities	88,137	90,574
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.01 par value. Authorized 1,000,000 shares; none issued	0	0
Common stock, $0.01 par value. Authorized 30,000,000 shares, 19,026,393 and 18,787,816 shares issued at December 31, 2018 and December 31, 2017, respectively; and 17,743,971 and 17,128,825 shares outstanding at December 31, 2018 and December 31, 2017, respectively	190	188
Additional paid-in capital	139,617	134,361
Accumulated deficit	(15,397)	(4,417)
Accumulated other comprehensive loss	(14,731)	(11,317)
Total Stockholders equity before treasury stock adjustment	109,679	118,815
Less: treasury stock at cost, common stock, 1,282,422 and 1,658,991 shares as of December 31, 2018 and December 31, 2017, respectively	(10,164)	(13,150)
Total stockholders’ equity	99,515	105,665
Total liabilities and stockholders’ equity	$ 187,652	$ 196,239