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Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2015 | Jun. 30, 2014
Operating activities: |  |
Net income (loss) | $ 11,743 | $ (7,640)
Reconciliation of net income (loss) to cash provided by (used in) operating activities: |  |
Depreciation, amortization, and accretion | 77,410 | 45,047
Provision (benefit) for deferred income taxes | (953) | (12,932)
Equity-based compensation expense | 4,197 | 3,273
Provision for doubtful accounts | 1,354 | (10)
Excess decommissioning and abandoning costs | 6 | 18,965
Other non-cash charges and credits | (109) | (3,272)
Gain on sale of assets | (2,306) | (239)
Changes in operating assets and liabilities, net of assets acquired: |  |
Accounts receivable | 31,137 | 10,198
Inventories | 6,148 | 8,979
Prepaid expenses and other current assets | (2,092) | 3,820
Trade accounts payable and accrued expenses | (43,079) | 6,536
Decommissioning liabilities, net | (4,411) | (29,766)
Other | 3,117 | (2,339)
Net cash provided by (used in) operating activities | 82,162 | 40,620
Investing activities: |  |
Purchases of property, plant, and equipment | (73,269) | (52,240)
Acquisition of businesses, net of cash acquired | 0 | (18,337)
Proceeds on sale of property, plant, and equipment | 3,943 | 4,250
Other investing activities | (323) | (935)
Net cash provided by (used in) investing activities | (69,649) | (67,262)
Financing activities: |  |
Proceeds from long-term debt | 203,871 | 76,450
Principal payments on long-term debt | (203,045) | (47,626)
CSI Compressco LP distributions | (18,723) | (2,508)
Proceeds from exercise of stock options | 101 | 391
Other financing activities | (244) | (369)
Net cash provided by (used in) financing activities | (18,040) | 26,338
Effect of exchange rate changes on cash | (916) | (881)
Decrease in cash and cash equivalents | (6,443) | (1,185)
Cash and cash equivalents at beginning of period | 48,384 | 38,754
Cash and cash equivalents at end of period | 41,941 | 37,569
Supplemental cash flow information: |  |
Interest paid | 28,418 | 8,916
Income taxes paid | $ 4,814 | $ 6,972

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- Definition Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.5) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 5 -Article 5 + Details
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- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + 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 (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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