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Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified | 6 Months Ended
--- | ---
Jun. 30, 2013 | Jun. 30, 2012
Cash flows from operating activities |  |
Net income | $ 23,297 | $ 23,060
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Loss on sale of assets | 3 | 10
Depreciation and amortization | 14,777 | 13,813
Impairment loss on assets | 1,025 | 461
Deferred income taxes | 1,281 | (681)
Noncash compensation related to stock plans | 6,001 | 5,300
Excess tax benefit of options exercised | (11) | (99)
Provision for doubtful accounts | 9 | 225
Changes in operating assets and liabilities, net of acquisitions: |  |
Trade accounts receivable | (45,345) | (40,837)
Inventories | 7,168 | (47)
Trade accounts payable | (7,021) | 10,694
Income taxes payable | 11,859 | 4,462
Accrued profit sharing trust contributions | (1,944) | (2,085)
Accrued cash profit sharing and commissions | 8,624 | 6,873
Other current assets | 185 | 3,537
Accrued liabilities | (1,502) | (4,775)
Long-term liabilities | (477) | (250)
Accrued workers' compensation | 403 | (613)
Other noncurrent assets | 578 | (2,168)
Net cash provided by operating activities | 18,910 | 16,880
Cash flows from investing activities |  |
Capital expenditures | (8,095) | (9,629)
Asset acquisitions, net of cash acquired | (5,300) | (56,044)
Proceeds from sale of property and equipment | 110 | 6,958
Loan repayment by related parties | 625 |
Net cash used in investing activities | (12,660) | (58,715)
Cash flows from financing activities |  |
Repurchase of common stock | (9,825) |
Debt and line of credit borrowings | 1,129 | 2,146
Repayment of debt and line of credit borrowings | (86) | (954)
Debt issuance costs |  | (25)
Issuance of common stock | 776 | 1,983
Excess tax benefit of options exercised | 11 | 99
Dividends paid | (6,053) | (12,059)
Net cash used in financing activities | (14,048) | (8,810)
Effect of exchange rate changes on cash and cash equivalents | (2,480) | (453)
Net decrease in cash and cash equivalents | (10,278) | (51,098)
Cash and cash equivalents at beginning of period | 175,553 | 213,817
Cash and cash equivalents at end of period | 165,275 | 162,719
Noncash activity during the period |  |
Noncash capital expenditures | 63 | 258
Dividends declared but not paid | 6,068 | 6,044
Issuance of Company's common stock for compensation | 318 | 418
Non-cash contingent consideration |  | $ 786

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