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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]  
Minimum rentals for aggregate lease commitments
The minimum rentals for aggregate lease commitments as of December 31, 2014, were as follows:
2015
$
7,738

2016
4,675

2017
2,930

2018
1,605

2019
866

Thereafter
554

Total
$
18,368