GOODWILL AND OTHER INTANGIBLE ASSETS (Details) - USD ($)
$ in Thousands |
12 Months Ended |
Dec. 31, 2016 |
Dec. 31, 2015 |
| Goodwill [Roll Forward] |
|
|
| Beginning balance |
$ 34,528
|
$ 27,557
|
| Ending balance |
48,903
|
34,528
|
| MK Capital [Member] |
|
|
| Goodwill [Roll Forward] |
|
|
| Goodwill acquired during the period |
|
6,971
|
| United Online,Inc. [Member] |
|
|
| Goodwill [Roll Forward] |
|
|
| Goodwill acquired during the period |
14,375
|
|
| Capital Markets Reportable Segment [Member] |
|
|
| Goodwill [Roll Forward] |
|
|
| Beginning balance |
28,840
|
21,869
|
| Ending balance |
28,840
|
28,840
|
| Capital Markets Reportable Segment [Member] | MK Capital [Member] |
|
|
| Goodwill [Roll Forward] |
|
|
| Goodwill acquired during the period |
|
6,971
|
| Capital Markets Reportable Segment [Member] | United Online,Inc. [Member] |
|
|
| Goodwill [Roll Forward] |
|
|
| Goodwill acquired during the period |
|
|
| Auction and Liquidation Reportable Segment [Member] |
|
|
| Goodwill [Roll Forward] |
|
|
| Beginning balance |
1,975
|
1,975
|
| Ending balance |
1,975
|
1,975
|
| Auction and Liquidation Reportable Segment [Member] | MK Capital [Member] |
|
|
| Goodwill [Roll Forward] |
|
|
| Goodwill acquired during the period |
|
|
| Auction and Liquidation Reportable Segment [Member] | United Online,Inc. [Member] |
|
|
| Goodwill [Roll Forward] |
|
|
| Goodwill acquired during the period |
|
|
| Valuation and Appraisal Reportable Segment [Member] |
|
|
| Goodwill [Roll Forward] |
|
|
| Beginning balance |
3,713
|
3,713
|
| Ending balance |
3,713
|
3,713
|
| Valuation and Appraisal Reportable Segment [Member] | MK Capital [Member] |
|
|
| Goodwill [Roll Forward] |
|
|
| Goodwill acquired during the period |
|
|
| Valuation and Appraisal Reportable Segment [Member] | United Online,Inc. [Member] |
|
|
| Goodwill [Roll Forward] |
|
|
| Goodwill acquired during the period |
|
|
| Principal Investments - United Online [Member] |
|
|
| Goodwill [Roll Forward] |
|
|
| Beginning balance |
|
|
| Ending balance |
14,375
|
|
| Principal Investments - United Online [Member] | MK Capital [Member] |
|
|
| Goodwill [Roll Forward] |
|
|
| Goodwill acquired during the period |
|
|
| Principal Investments - United Online [Member] | United Online,Inc. [Member] |
|
|
| Goodwill [Roll Forward] |
|
|
| Goodwill acquired during the period |
$ 14,375
|
|