Condensed Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash Flows from Operating Activities:
Net earnings	$ 1,723	$ 1,319
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	2,425	2,153
Loss on disposition of fixed assets	59	253
Adjustment of contingent liability (Note 6)	25	39
Unrealized loss (gain) on interest rate swaps	103	(13)
Amortization of stock-based compensation expense	261	115
Amortization of deferred financing costs	30	32
Deferred (benefit) taxes	(158)	261
Loss from unconsolidated subsidiary	14
Changes in Operating Assets and Liabilities:
Receivables, net	(881)	687
Prepaid expenses and other assets	(1,440)	(381)
Accounts payable	(385)	(65)
Accrued liabilities	1,855	1,326
Inventories	20	(13)
Other operating liabilities	(252)	348
Accrued payroll	(651)	(611)
Taxes payable	1,478	345
Net cash provided by operating activities	4,226	5,795
Cash Flows used in Investing Activities:
Purchases of property and equipment	(7,631)	(12,200)
Proceeds from disposition of assets		2
Net cash used in investing activities	(7,631)	(12,198)
Cash Flows provided by (used in) Financing Activities:
Proceeds from borrowings	9,173
Principal payments	(1,909)	(1,449)
Distribution to non-controlling interest	(37)	(642)
Net cash provided by (used in) financing activities	7,227	(2,091)
Effect of Exchange Rate Changes on Cash	163	(220)
Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	3,985	(8,714)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	46,284	76,444
Cash, Cash Equivalents and Restricted Cash at End of Period	50,269	67,730
Supplemental Disclosure of Cash Flow Information:
Interest paid	1,053	1,064
Income taxes paid	502	619
Non-Cash Investing Activities:
Purchase of property and equipment on account	$ 5,499	$ 3,647