Capital Stock (Tables)

12 Months Ended

Dec. 31, 2017

Capital Stock Disclosure [Abstract]

Schedule Of Stock Options And Restricted Stock Units Activity Rollforward [Table Text Block]

		Stock Options			Restricted Stock Units			Market Condition RSU's
				Weighted
		Stock		Average	Restricted			Market
		Options		Exercise	Stock Units		Grant Date	Condition RSU's		Grant Date
		Outstanding		Price	Outstanding		Fair Value	Outstanding		Fair Value
Balance at December 31, 2014		6,263,112	$	3.42	306,397	$	4.30	-	$	-
	Granted	945,000		5.31	254,685		5.56	196,785		4.81
	Exercised	(1,772,062)		3.04	-		-	-		-
	Vested (RSUs)	-		-	(237,188)		5.65	-		-
	Cancelled / forfeited	(413,864)		4.15	(10,335)		5.56	(11,247)		4.81
Balance at December 31, 2015		5,022,186		3.85	313,559		5.29	185,538		4.81
	Granted	43,000		3.10	1,095,190		2.92	-		4.81
	Exercised	(374,772)		2.80	-		-	-		-
	Vested (RSUs)	-		-	(301,520)		4.45	-		-
	Cancelled / forfeited	(593,596)		3.84	(34,576)		3.89	(3,388)		4.81
Balance at December 31, 2016		4,096,818		3.94	1,072,653		3.15	182,150		4.81
	Granted	237,700		3.24	1,298,371		2.49	-		-
	Exercised	(143,391)		2.48	-		-	-		-
	Vested (RSUs)	-		-	(488,570)		3.08	-		-
	Cancelled / forfeited	(410,883)		3.93	(85,527)		3.05	(18,023)		4.81
Balance at December 31, 2017		3,780,244	$	3.95	1,796,927	$	2.69	164,127	$	4.81

Table Of Assumptions [Table Text Block]

	Year Ended December 31,
	2017		2016		2015
Volatility	41.63	%	41.97	%	40.97	%
Risk-free interest rate	2.03	%	1.29	%	1.72	%
Expected holding period (in years)	5.41	years	5.21	years	5.50	years
Dividend yield	-	%	-	%	-	%

	Year Ended
	December 31,
	2015
Volatility	35.88	%
Risk-free interest rate	0.99	%
Correlation coefficient	0.25	%
Dividend yield	-	%

Stock Based Compensation Expense Activity By Function [Table Text Block]

		Year Ended December 31,
		2017		2016		2015
		(in thousands)
Cost of revenues	$	63	$	60	$	70
Sales and marketing		595		546		418
General and administrative		2,703		2,780		2,170
Research and development		139		111		97
Total stock-based compensation	$	3,500	$	3,497	$	2,755

Basic and Diluted Shares [Table Text Block]

	Year Ended December 31,
	2017	2016	2015
Basic	34,753,325	34,211,521	33,592,775
Effect of assumed conversion of employee and director stock options, restricted stock units and Market Condition RSU's	-	-	-
Diluted	34,753,325	34,211,521	33,592,775

Schedule of Summary of Outstanding and Exercisable Options [Table Text Block]

		Options Outstanding						Options Exercisable
			Weighted						Weighted
			Average		Weighted				Average		Weighted
	Range of	Shares	Remaining		Average		Aggregate	Shares	Remaining		Average		Aggregate
	Exercise	Outstanding at	Contractual Life		Exercise		Intrinsic	Exercisable at	Contractual Life		Exercise		Intrinsic
	Price	Dec. 31, 2017	in Years		Price		Value	Dec. 31, 2017	in Years		Price		Value
$	2.02-2.37	415,024	1.22	$	2.20	$	457	415,024	1.22	$	2.20	$	457
	2.38-2.94	357,095	4.78		2.58		257	315,845	4.25		2.57		231
	2.95-3.59	321,239	7.89		3.30		-	79,039	2.93		3.35		-
	3.60-3.95	277,429	5.47		3.65		-	273,679	5.46		3.65		-
	3.96-4.11	252,282	3.49		4.04		-	250,782	3.47		4.04		-
	4.12-4.17	607,875	6.41		4.12		-	452,750	6.41		4.12		-
	4.18-4.26	71,500	6.66		4.21		-	55,500	6.63		4.21		-
	4.27-4.41	750,000	5.88		4.31		-	750,000	5.88		4.31		-
	4.42-5.51	462,300	7.14		5.37		-	273,175	7.11		5.31		-
	5.52-5.63	265,500	7.41		5.56		-	132,750	7.41		5.56		-
$	2.02-5.63	3,780,244	5.61	$	3.95	$	714	2,998,544	5.02	$	3.84	$	688