Consolidated Statements of Cash Flows Decrease in Cash and Cash Equivalents (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Cash flows from operating activities:
Net income	$ 4,469	$ 2,509
Adjustments to reconcile net income to cash used by operating activities:
Depreciation and amortization	203	127
Allowance for doubtful accounts	0	1
Value of share-based payment arrangements	33	0
Amortization of deferred finance costs	21	0
Deferred tax benefit utilization	497	1,538
Changes in assets and liabilities:
Trade accounts receivable	(4,561)	(6,431)
Inventories	(11,367)	1,110
Prepaid and other assets	(1,482)	11
Accounts payable and accrued expenses	4,852	(995)
Cash used by operating activities	(7,335)	(2,130)
Cash flows from investing activities:
Additions to patents	0	(10)
Additions to property, plant, and equipment	(173)	(160)
Investment in affiliates	(72)	(3)
Cash used by investing activities	(245)	(173)
Cash flows from financing activities:
Issuance of common stock	607	0
Proceeds (repayments) from short-term debt - net	4,503	(1,271)
Proceeds from issuance of long-term debt	0	65
Repayment of long-term debt	(84)	(301)
Cash provided (used) by financing activities	5,026	(1,507)
Decrease in cash and cash equivalents	(2,554)	(3,810)
Cash and cash equivalents at beginning of period	3,991	3,958
Cash and cash equivalents at end of period	1,437	148
Supplemental Disclosure of Cash Flow Information:
Cash paid during period for interest	$ 176	$ 171