Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Aggregate Minimum Future Payments Required on Operating Leases

As of December 31, 2013, the approximate aggregate minimum future payments required on the operating leases are as follows:

2014	$	20,489
2015	19,700
2016	20,598
2017	18,835
2018	18,182
Thereafter	71,732
Total	$	169,536