Quarterly Financial Information (Unaudited)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information (Unaudited)

16. Quarterly Financial Information (Unaudited)

	Condensed Consolidated Statements of Operations
	2017
	Q1		Q2			Q3			Q4
			(in thousands, except per share data)
Revenue	$	22,841	$	18,848		$	19,653		$	19,469
Gross profit	$	6,253	$	3,873		$	4,380		$	3,616
Income (loss) from operations	$	41	$	(2,619	)	$	(2,546	)	$	(4,297	)
Net income (loss)	$	202	$	(2,560	)	$	(2,468	)	$	(4,232	)
Basic income (loss) per share	$	0.02	$	(0.20	)	$	(0.20	)	$	(0.33	)
Diluted income (loss) per share	$	0.02	$	(0.20	)	$	(0.20	)	$	(0.33	)
Shares used in per share calculations:
Basic		12,550		12,577			12,607			12,640
Diluted		12,848		12,577			12,607			12,640

	2016
	Q1		Q2			Q3			Q4
			(in thousands, except per share data)
Revenue	$	25,439	$	22,738		$	22,467		$	26,797
Gross profit	$	4,296	$	3,893		$	3,677		$	3,954
Income (loss) from operations	$	649	$	(85	)	$	(415	)	$	(1,307	)
Net income (loss)	$	500	$	(185	)	$	(106	)	$	(1,261	)
Basic income (loss) per share	$	0.04	$	(0.02	)	$	(0.01	)	$	(0.10	)
Diluted income (loss) per share	$	0.04	$	(0.02	)	$	(0.01	)	$	(0.10	)
Shares used in per share calculations:
Basic		12,102		12,152			12,310			12,473
Diluted		12,531		12,152			12,310			12,473

	Condensed Consolidated Balance Sheets
	2017
	March 31		June 30		September 30		December 31
	(in thousands)
Cash, cash equivalents and short-term investments	$	30,984	$	27,296	$	26,758	$	24,754
Total current assets	$	49,092	$	47,077	$	45,021	$	44,253
Total assets	$	54,403	$	52,395	$	50,247	$	49,434
Total current liabilities	$	14,310	$	14,445	$	14,351	$	17,427
Total shareholders' equity	$	39,206	$	37,099	$	35,238	$	31,430

	2016
	March 31		June 30		September 30		December 31
	(in thousands)
Cash, cash equivalents and short-term investments	$	27,626	$	26,898	$	31,577	$	33,200
Total current assets	$	49,683	$	47,059	$	51,844	$	55,657
Total assets	$	55,389	$	52,680	$	57,355	$	61,008
Total current liabilities	$	16,322	$	13,407	$	15,502	$	20,221
Total shareholders' equity	$	37,873	$	38,166	$	38,790	$	38,112