Commitments and Contingencies - Minimum Payments Under Noncancelable Operating and Capital Leases (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014
Operating Leases
2014, remaining six months	$ 1,557
2015	3,207
2016	3,047
2017	172
2018	126
2019 and thereafter	109
Total minimum payments	8,218
Capital Leases
2014, remaining six months	34
2015	68
2016	52
2017	22
2018	18
2019 and thereafter	1
Total minimum payments	195
Less: Amount representing interest	16
Present value of capital lease obligations	179
Less: Current portion	60
Capital lease obligation, net of current portion	$ 119