Supplementary Data (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Other current assets:    
Income taxes receivable $ 671 $ 1,932
Other current assets 93 102
Total other current assets 764 2,034
Current portion of long-term debt and capital lease obligations:    
Long-term Debt 16,126 13,021
Capital leases 197 246
Total current portion of long-term debt and capital lease obligations 16,323 13,267
Other current liabilities:    
Income taxes payable 1,579 509
Deferred rent 232 208
Total other current liabilities 1,811 717
Accrued liabilities:    
Accrued salaries and wages 1,365 4,005
Accrued incentive compensation 4,864 8,237
Accrued vacation 2,614 2,305
Accrued insurance 2,053 1,726
Accrued interest 257 1,235
Accrued ad valorem and franchise taxes 2,314 981
Accrued commissions 410 543
Other accrued liabilities 1,417 1,059
Total accrued liabilities 15,294 20,091
Other long-term liabilities:    
Deferred rent 1,029 1,207
Incentive compensation 924 575
Contingent consideration 770 785
Total other long-term liabilities 2,723 2,567
Term Loan [Member] | Credit Agreement [Member]    
Current portion of long-term debt and capital lease obligations:    
Long-term Debt 14,063 11,250
Acquisition Debt, Deferred Purchase Price [Member] | Notes Payable, Other Payables [Member]    
Current portion of long-term debt and capital lease obligations:    
Long-term Debt $ 2,063 $ 1,771