Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net income	$ 14,259	$ 7,774
Adjustments to reconcile net income to cash provided by (used in) operating activities:
Depreciation and amortization	1,209	1,143
Allowance for doubtful accounts	60	76
Value of share-based payment arrangements	0	34
Amortization of deferred finance costs	33	72
Deferred tax asset utilization	496	1,344
Changes in assets and liabilities:
Trade accounts receivable	(19,785)	(17,593)
Inventories	3,988	4,123
Prepaid and other assets	(5,529)	(907)
Income taxes payable	1,833	1,665
Accounts payable and accrued expenses	4,143	(1,879)
Cash provided by (used in) operating activities	707	(4,148)
Cash flows from investing activities:
Additions to property, plant, and equipment	(637)	(517)
Cash used in investing activities	(637)	(517)
Cash flows from financing activities:
Payment of deferred acquisition costs	(528)	(833)
Proceeds from issuance of common stock	355	593
Proceeds from short-term debt - net	0	5,369
Repayment of long-term debt	(155)	(178)
Cash (used in) provided by financing activities	(328)	4,951
(Decrease) increase in cash and cash equivalents	(258)	286
Cash and cash equivalents at beginning of period	33,931	1,258
Cash and cash equivalents at end of period	33,673	1,544
Supplemental Disclosure of Cash Flow Information:
Cash paid during period for interest	142	551
Cash paid for income taxes	$ 6,559	$ 1,757