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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013
OPERATING ACTIVITIES |  |
Net income | $ 10,693 | $ 11,511
Adjustments to reconcile net income to net cash provided by/(used in) operating activities: |  |
Depreciation | 14,107 | 14,211
Amortization | 1,801 | 1,663
Change in long-term liabilities, deferred taxes and other credits | (214) | 3,873
Provision for write-off of property, plant and equipment | 1 | 44
(Gain) on disposition of assets |  | (3,763)
Excess tax benefit of options exercised | (39) | (352)
Compensation and benefits paid or payable in Class A Common Stock | 542 | (698)
Changes in operating assets and liabilities, net of business divestitures: |  |
Accounts receivable | 10,964 | (1,723)
Inventories | (8,996) | (2,988)
Prepaid expenses and other current assets | (2,148) | (3,577)
Income taxes prepaid and receivable | 21 | 152
Accounts payable | (1,294) | 547
Accrued liabilities | (12,849) | (8,983)
Income taxes payable | (1,710) | (5,318)
Other, net | (2,031) | (438)
Net cash provided by operating activities | 8,848 | 4,161
INVESTING ACTIVITIES |  |
Purchases of property, plant and equipment | (14,603) | (13,188)
Purchased software | (294) | (93)
Proceeds from sale of assets |  | 6,268
Net cash (used in)/provided by investing activities | (14,897) | (7,013)
FINANCING ACTIVITIES |  |
Proceeds from borrowings | 4,435 | 46,868
Principal payments on debt | (6,516) | (32,183)
Proceeds from options exercised | 126 | 1,964
Excess tax benefit of options exercised | 39 | 352
Debt acquisition costs |  | (1,563)
Dividends paid | (4,765) |
Net cash (used in)/provided by financing activities | (6,681) | 15,438
Effect of exchange rate changes on cash and cash equivalents | (1,557) | (3,471)
(Decrease)/increase in cash and cash equivalents | (14,287) | 9,115
Cash and cash equivalents at beginning of period | 222,666 | 190,718
Cash and cash equivalents at end of period | $ 208,379 | $ 199,833

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- Definition The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
Name: | us-gaap_RestrictedStockExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration