Restricted Stock (Narrative) (Details) (USD $) In Thousands, unless otherwise specified		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Dec. 31, 2013	Jun. 30, 2014 Restricted Stock [Member]	Jun. 30, 2013 Restricted Stock [Member]	Jun. 30, 2014 Restricted Stock [Member]	Jun. 30, 2013 Restricted Stock [Member]	Jun. 30, 2014 Cost of revenue [Member] Restricted Stock [Member]	Jun. 30, 2013 Cost of revenue [Member] Restricted Stock [Member]	Jun. 30, 2014 Cost of revenue [Member] Restricted Stock [Member]	Jun. 30, 2013 Cost of revenue [Member] Restricted Stock [Member]	Jun. 30, 2014 Research and development [Member] Restricted Stock [Member]	Jun. 30, 2013 Research and development [Member] Restricted Stock [Member]	Jun. 30, 2014 Research and development [Member] Restricted Stock [Member]	Jun. 30, 2013 Research and development [Member] Restricted Stock [Member]	Jun. 30, 2014 Sales and marketing [Member] Restricted Stock [Member]	Jun. 30, 2013 Sales and marketing [Member] Restricted Stock [Member]	Jun. 30, 2014 Sales and marketing [Member] Restricted Stock [Member]	Jun. 30, 2013 Sales and marketing [Member] Restricted Stock [Member]	Jun. 30, 2014 General and administrative [Member] Restricted Stock [Member]	Jun. 30, 2013 General and administrative [Member] Restricted Stock [Member]	Jun. 30, 2014 General and administrative [Member] Restricted Stock [Member]	Jun. 30, 2013 General and administrative [Member] Restricted Stock [Member]	Jun. 30, 2014 Shares Withheld and Repurchased [Member] Restricted Stock [Member]	Jun. 30, 2014 Additional Paid-in Capital [Member] Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested, restricted shares				122																		40
Minimum statutory tax withholding requirements																						$ 66
Issuance of restricted stock to settle accrued 2013 bonuses, Value																							204
Accrued bonuses	165
Restricted stock compensation expense		46	(65)	139	333	7	3	23	8	3	0	6	3	8	11	10	26	28	(79)	100	296
Unrecognized stock-based compensation expense for restricted stock		818		818
Unrecognized stock-based compensation expense, restricted stock, upon change in control, value		38		38
Unrecognized stock-based compensation expense, restricted stock, upon change in control, shares		15		15
Unrecognized stock-based compensation expense, restricted stock, amortized for weighted average period		$ 780		$ 780
Weighted average period for amortization of unrecognized stock-based compensation, restricted stock				3 years 1 month 24 days