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Commitments and Contingencies (Tables)
3 Months Ended
Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases
At March 31, 2015, the approximate minimum future commitments payable under non-cancelable contracts for leased premises are as follows:
(in thousands; unaudited)
2015

2016

2017

2018

2019

Thereafter

Total

Operating leases
$
2,822

$
3,788

$
3,781

$
3,810

$
3,553

$
6,786

$
24,540