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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Cash flows from operating activities:      
Net income from consolidated operations $ 7,593 $ 7,559 $ 11,276
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 4,846 4,376 4,084
Loss on sales of property, plant and equipment 27 5 11
Share-based compensation 1,069 1,119 924
Deferred income taxes 437 1,232 740
Excess tax benefits on share-based compensation (356) (1,219) (818)
Changes in operating assets and liabilities, net of effects from acquisition:      
Receivables, net (1,011) 562 804
Inventories (1,309) (1,845) (1,353)
Prepaid expenses (266) 26 (36)
Refundable income taxes 2,362 (436) 994
Accounts payable (800) 2,317 (1,007)
Accrued expenses 152 (2,243) 1,272
Other liabilities 29 (181) (417)
Other assets 325 (146) (368)
Net cash provided by operating activities 13,098 11,126 16,106
Cash flows from investing activities:      
Additions to property, plant and equipment (16,321) (13,436) (5,830)
Holdback payment related to the acquisition of Packaging Alternatives Corporation (PAC)     (600)
Redemption of cash value life insurance     37
Proceeds from sale of property, plant and equipment 53 112 1
Net cash used in investing activities (16,268) (13,324) (6,392)
Cash flows from financing activities:      
Excess tax benefits on share-based compensation 356 1,219 818
Proceeds from the exercise of stock options, net of attestations 358 336 191
Principal repayments of long-term debt (996) (977) (6,601)
Payment of statutory withholding for stock options exercised and restricted stock units vested (209) (831) (879)
Repurchases of common stock (587)    
Payment of contingent note payable   (800)  
Proceeds from long-term borrowings     580
Net cash used in financing activities (1,078) (1,053) (5,891)
Net change in cash and cash equivalents (4,248) (3,251) 3,823
Cash and cash equivalents at beginning of year 34,052 37,303 33,480
Cash and cash equivalents at end of year $ 29,804 $ 34,052 $ 37,303