Employee Benefit Plans (Details 5) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
Employee Retirement Plan | |||
Employer's matching contribution, percentage | 40.00% | ||
Period of service for vesting of matching contributions | 3 years | ||
Annual increments for vesting in employer's matching contribution | 0.33 | ||
Period over which the matching contribution vest annually | 3 years | ||
Expenses related to 401 (k) plan | $ 2.5 | $ 2.1 | $ 1.7 |