Note 22 - Segments (Details Textual) - USD ($)
$ in Thousands |
12 Months Ended |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
| Continuing Operations [Member] | Sales Revenue, Net [Member] | Government Contracts Concentration Risk [Member] | One US State [Member] |
|
|
|
| Concentration Risk, Percentage |
10.20%
|
11.00%
|
13.70%
|
| Continuing Operations [Member] | Sales Revenue, Net [Member] | Government Contracts Concentration Risk [Member] | UNITED KINGDOM |
|
|
|
| Concentration Risk, Percentage |
|
10.70%
|
11.20%
|
| Continuing Operations [Member] | Geographic Distribution, Domestic [Member] | Sales Revenue, Services, Net [Member] | Geographic Concentration Risk [Member] |
|
|
|
| Concentration Risk, Percentage |
79.20%
|
74.40%
|
82.60%
|
| Continuing Operations [Member] | Geographic Distribution, Foreign [Member] | Sales Revenue, Services, Net [Member] | Geographic Concentration Risk [Member] |
|
|
|
| Concentration Risk, Percentage |
20.80%
|
25.60%
|
17.40%
|
| Continuing Operations [Member] | Geographic Distribution, Foreign [Member] | Net Assets, Geographic Area [Member] |
|
|
|
| Net Assets |
$ 76,579
|
$ 108,587
|
|
| Operating Income (Loss) [Member] | NET Services [Member] |
|
|
|
| Indirect Corporate Overhead Expense |
|
|
$ 11,224
|
| Operating Income (Loss) [Member] | WD Services [Member] |
|
|
|
| Indirect Corporate Overhead Expense |
|
|
$ 8,819
|