Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2014

Stockholders' Equity [Abstract]

Stock-Based Compensation Expenses Included In The Condensed Consolidated Statements Of Operations

	For the Year Ended December 31,
	2014		2013		2012
Sales and marketing	$	1,031	$	1,113	$	1,169
Research and development		104		122		212
General and administrative		2,330		2,772		2,516
	$	3,465	$	4,007	$	3,897

Schedule Of Valuation Assumptions Used For Stock Options And ESPP Plans

	2014		2013		2012
Risk-free interest rate:
Time-based stock options	1.61	%	1.02	%	0.92	%
Performance-based stock options	N/A		1.22		0.96
ESPP	0.04		0.06		0.09
Volatility factor of the market price of the Company's common stock:
Time-based stock options	57.96	%	64.12	%	63.79	%
Performance-based stock options	N/A		63.20		63.66
ESPP	42.50		37.36		56.79
Weighted-average expected life (years):
Time-based stock options	5.00		5.10		5.21
Performance-based stock options	N/A		5.04		5.22
ESPP	0.25		0.25		0.25
Dividend yield	0.00	%	0.00	%	0.00	%

Schedule Of Stock Option Activity

	Options Outstanding
			Weighted-	Weighted-
			Average	Average
	Number		Exercise	Remaining	Aggregate
	of		Price Per	Contractual	Intrinsic
	Shares		Share	Term (Years)	Value
Balance as of January 1, 2012	6,915	$	3.46	6.98	$	8,130
Options forfeited	(1,536)		5.13
Options granted	1,889		6.14
Options exercised	(1,270)		2.66
Balance as of December 31, 2012	5,998	$	4.05	6.06	$	5,575
Options forfeited	(966)		5.45
Options granted	1,637		4.76
Options exercised	(574)		2.82
Balance as of December 31, 2013	6,095	$	4.14	5.66	$	7,199
Options forfeited	(705)		5.10
Options granted	1,740		4.85
Options exercised	(1,233)		4.43
Balance as of December 31, 2014	5,897	$	4.17	6.08	$	27,066
Vested and expected to vest after December 31, 2014	5,445	$	4.11	5.84	$	25,342
Exercisable as of December 31, 2014	3,397	$	3.60	4.09	$	17,537

Schedule Of RSU Activity

	Restricted Stock Units
	Outstanding
	Number	Aggregate
	of	Intrinsic
	Shares	Value
Balance as of January 1, 2012	177	$	758
Awarded	190
Vested/Released	(47)
Forfeited	(60)
Balance as of December 31, 2012	260	$	1,121
Awarded	170
Vested/Released	(39)
Forfeited	(23)
Balance as of December 31, 2013	368	$	1,857
Awarded	7
Vested/Released	(212)
Forfeited	(4)
Balance as of December 31, 2014	159	$	1,393
Vested and expected to vest after December 31, 2014	140	$	1,222
Exercisable as of December 31, 2014 (Vested and deferred)	—		—