SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - PPE to Reimbursable Expenditures (Details) - USD ($)
$ in Thousands |
12 Months Ended |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
| Business Combinations |
|
|
|
| Bargain purchase gain |
|
$ 146
|
|
| Internal-Use Software and Website Development Costs |
|
|
|
| Capitalized costs associated with system conversion and website development |
$ 300
|
600
|
$ 700
|
| Goodwill |
|
|
|
| Percentage points of control premium added to the stock price as quoted on the Nasdaq Global Market |
35.00%
|
|
|
| Revenue growth rates per year under discounted cash flow model (as a percent) |
3.00%
|
|
|
| Rate employed to discount future excess cash flows (as a percent) |
13.50%
|
|
|
| Debt Issuance Costs |
|
|
|
| Amortization of debt issuance costs included in interest expense |
$ 141
|
153
|
214
|
| Revenue Recognition |
|
|
|
| Notice period to terminate agreements early due to breach or for convenience |
30 days
|
|
|
| Reimbursable Expenditures |
|
|
|
| Reimbursable expenditures |
$ 10,100
|
$ 9,900
|
$ 10,400
|
| Furniture Fixtures And Equipment | Minimum |
|
|
|
| Furniture, Fixtures and Equipment, net |
|
|
|
| Estimated useful life of assets |
3 years
|
|
|
| Furniture Fixtures And Equipment | Maximum |
|
|
|
| Furniture, Fixtures and Equipment, net |
|
|
|
| Estimated useful life of assets |
5 years
|
|
|
| Leasehold Improvements | Minimum |
|
|
|
| Furniture, Fixtures and Equipment, net |
|
|
|
| Estimated useful life of assets |
3 years
|
|
|
| Leasehold Improvements | Maximum |
|
|
|
| Furniture, Fixtures and Equipment, net |
|
|
|
| Estimated useful life of assets |
5 years
|
|
|