Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net income	$ 2,062	$ 2,030
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	1,131	974
Share-based compensation	265	179
Excess tax benefit on share-based compensation	(563)
Deferred income taxes	(121)	(4)
Changes in operating assets and liabilities:
Receivables, net	(1,118)	(678)
Inventories	(1,129)	(836)
Prepaid expenses	(1,372)	(886)
Refundable income taxes	1,151	777
Other assets	(51)	(82)
Accounts payable	1,567	597
Accrued expenses	(2,548)	(2,031)
Retirement and other liabilities	(280)	75
Net cash (used in) provided by operating activities	(1,006)	115
Cash flows from investing activities:
Additions to property, plant, and equipment	(1,377)	(1,252)
Holdback payment related to the acquisition of Packaging Alternatives Corporation		(200)
Net cash used in investing activities	(1,377)	(1,452)
Cash flows from financing activities:
Proceeds from the issuance of long-term debt		580
Principal repayments of long-term debt	(243)	(386)
Proceeds from exercise of stock options, net of attestation	81	31
Excess tax benefit on share-based compensation	563
Payment of statutory withholdings for stock options exercised and restricted stock units vested	(701)	(426)
Net cash used in financing activities	(300)	(201)
Net decrease in cash and cash equivalents	(2,683)	(1,538)
Cash and cash equivalents at beginning of period	37,303	33,480
Cash and cash equivalents at end of period	$ 34,620	$ 31,942