Schedule of Balances Related to Property and Equipment (Details) - USD ($) $ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| Property Plant And Equipment [Abstract] | ||
| Land | $ 0 | $ 3,200 |
| Building and leasehold improvements | 2,300 | 25,300 |
| Equipment and furniture | 89,600 | 97,200 |
| Computer software | 92,600 | 158,200 |
| Property and Equipment, Gross | 184,500 | 283,900 |
| Less accumulated depreciation | (141,793) | (146,438) |
| Property and equipment, net | $ 42,695 | $ 137,455 |