|
Commitments and Contingencies (Details Textual) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Commitments and Contingencies Disclosure [Abstract] | |||
| Rental expense for all leases, net of sublease revenues | $ 4.2 | $ 3.5 | $ 3.2 |