Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 26,422	$ 22,719
Marketable securities	25,712	22,619
Accounts receivable, net of allowance for doubtful accounts of $3,477 as of December 31, 2016 and $3,534 as of December 31, 2015	31,152	43,895
Inventories	20,745	21,589
Prepaid expenses and other current assets	4,801	4,271
Total current assets	108,832	115,093
Property and equipment, less accumulated depreciation of $45,766 as of December 31, 2016 and $43,202 as of December 31, 2015	36,586	39,900
Intangible assets, less accumulated amortization of $16,344 as of December 31, 2016 and $11,390 as of December 31, 2015	17,838	26,755
Goodwill	31,343	36,747
Other non-current assets	5,134	3,096
Non-current deferred income tax asset	24	4,686
Total assets	199,757	226,277
Current liabilities:
Accounts payable	8,436	8,975
Accrued compensation and employee-related expenses	4,766	6,588
Accrued other	8,317	12,042
Accrued product warranty costs	2,280	1,880
Deferred revenue	6,661	5,962
Current portion of long-term debt	7,900	6,638
Liability for Uncertain Tax Positions, Current	1,283	1,474
Total current liabilities	39,643	43,559
Non-current deferred income tax liability	3,133	5,097
Other long-term liabilities	326	1,391
Long-term debt, excluding current portion	50,153	58,054
Total liabilities	93,255	108,101
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, 18,420,914 and 17,336,314 shares issued; 16,761,923 and 15,677,323 shares outstanding at December 31, 2016 and December 31, 2015, respectively	184	173
Additional paid-in capital	129,660	124,619
Accumulated earnings	6,617	14,134
Accumulated other comprehensive loss	(16,809)	(7,600)
Total Stockholders equity before treasury stock adjustment	119,652	131,326
Less: treasury stock at cost, common stock, 1,658,991 shares as of December 31, 2016 and December 31, 2015, respectively	(13,150)	(13,150)
Total stockholders’ equity	106,502	118,176
Total liabilities and stockholders’ equity	$ 199,757	$ 226,277