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Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Cash flows from operating activities:    
Net income $ 3,047 $ 7,907
Loss from discontinued operations (7,220) (528)
Income from continuing operations 10,267 8,435
Adjustments to reconcile net income to net cash (used in) provided by operating activities:    
Depreciation and amortization 12,251 14,216
Deferred income taxes 871 508
(Gain) on sale of marketable securities (1,850) 0
Non-cash compensation 1,826 979
Deferred revenue recognized (7,892) (6,884)
Deferred loan costs recognized 78 172
Write-off of pre contract costs 1,113 0
Write-off of debt issuance costs 0 277
Gain on sale of assets (2,590) (4,523)
Provision for excess and obsolete inventory 928 945
Other noncash items 1,209 (2,545)
Contributions to pension plans (1,598) (753)
Changes in operating assets and liabilities:    
Accounts receivable 4,307 (1,509)
Inventory (1,191) (4,302)
Prepaid expenses and other assets (1,350) 564
Accounts payable (15,193) 11,747
Accrued and other liabilities (6,106) 100
Net cash (used in) provided by operating activities (4,920) 17,427
Cash flows from investing activities:    
Capital expenditures (7,082) (6,848)
Proceeds from sale of marketable securities 1,914 0
Proceeds from sale of assets 4,595 5,032
Other 0 33
Net cash used in investing activities (573) (1,783)
Cash flows from financing activities:    
Repayment of former Revolving Credit Agreement 0 (10,000)
Repayment of former Senior Notes 0 (13,305)
Net change in debt under revolving credit agreements 9,000 10,000
Payments for deferred loan costs 0 (387)
Common stock repurchases (660) 0
Indirect repurchase of shares for minimum statutory tax withholdings (750) (435)
Cash dividends paid (1,607) 0
Proceeds from issuance of common stock 1 64
Net cash provided by (used in) financing activities 5,984 (14,063)
Net increase in cash and cash equivalents 491 1,581
Cash and cash equivalents at beginning of year 18,173 16,592
Cash and cash equivalents at end of year $ 18,664 $ 18,173