Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 9,358	$ 8,978
Marketable securities	46,386	29,307
Accounts receivable, net of allowance for doubtful accounts of $1,705 as of December 31, 2013 and $929 as of December 31, 2012	27,549	27,654
Inventories	18,255	16,203
Prepaid expenses and other assets	3,784	3,264
Deferred income taxes	3,060	1,146
Total current assets	108,392	86,552
Property and equipment, less accumulated depreciation of $36,456 as of December 31, 2013 and $31,657 as of December 31, 2012	37,142	36,733
Intangible assets, less accumulated amortization of $2,005 as of December 31, 2013 and $826 as of December 31, 2012	14,987	1,684
Goodwill	18,281	4,712
Other non-current assets	5,047	4,363
Deferred income taxes	0	3,524
Total assets	183,849	137,568
Current liabilities:
Accounts payable	8,876	7,086
Accrued compensation and employee-related expenses	5,859	6,785
Accrued other	7,325	4,595
Accrued product warranty costs	1,269	814
Deferred revenue	4,858	1,892
Current portion of long-term debt	1,272	138
Total current liabilities	29,459	21,310
Deferred income taxes	625	0
Other long-term liabilities	204	140
Line of credit	30,000	7,000
Long-term debt, excluding current portion	7,094	3,414
Total liabilities	67,382	31,864
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, 16,936,128 and 16,563,836 shares issued; 15,277,137 and 14,904,845 shares outstanding at December 31, 2013 and December 31, 2012, respectively	169	166
Additional paid-in capital	117,147	111,514
Accumulated earnings	11,840	7,307
Accumulated other comprehensive income (loss)	461	(133)
Total Stockholders equity before treasury stock adjustment	129,617	118,854
Less: treasury stock at cost, common stock, 1,658,991 shares as of December 31, 2013 and December 31, 2012, respectively	(13,150)	(13,150)
Total stockholders’ equity	116,467	105,704
Total liabilities and stockholders’ equity	$ 183,849	$ 137,568