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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2017
OPERATING ACTIVITIES |  |  |
Net income | $ 264,308 | $ 114,394 | $ 5,710
Reconciliation of net income to cash provided by operating activities: |  |  |
Depreciation, amortization and accretion | 44,941 | 48,572 | 52,628
Amortization on debt issuance costs | 286 | 375 | 375
Loss on extinguishment of debt | 447 | 0 | 0
Bad debt expense | 2,849 | 4,168 | 2,847
Deferred tax expense (benefit) | 6,939 | 8,138 | (24,495)
Stock-based compensation | 14,585 | 14,157 | 6,011
Employee stock purchase plan | 189 | 150 | 164
Loss on disposal of property and equipment | 277 | 387 | 538
Impairment of goodwill | 0 | 0 | 113,944
Impairment of intangible and other long-lived assets | 180 | 2,417 | 13,222
Restructuring charges | 295 | 1,667 | 28,984
Changes in operating assets and liabilities: |  |  |
Trade accounts receivable, net | (16,157) | 10,770 | (1,336)
Inventories, net | 8,827 | (751) | 1,060
Prepaid expenses and other current assets | (515) | 11,124 | 7,975
Income tax receivable | (165) | 26,999 | (1,331)
Other assets | 2,344 | (2,090) | 1,882
Trade accounts payable | 31,035 | (2,184) | (7,825)
Accrued expenses | (7,160) | 28,627 | (403)
Income taxes payable | 3,809 | (1,693) | (3,643)
Long-term liabilities | 2,191 | 62,128 | 3,023
Net cash provided by operating activities | 359,505 | 327,355 | 199,330
INVESTING ACTIVITIES |  |  |
Purchases of property and equipment | (29,086) | (34,813) | (44,499)
Proceeds from sale of property and equipment, net | 68 | 116 | 0
Net cash used in investing activities | (29,018) | (34,697) | (44,499)
FINANCING ACTIVITIES |  |  |
Proceeds from short-term borrowings | 162,001 | 214,751 | 405,988
Repayments of short-term borrowings | (161,621) | (214,889) | (468,938)
Debt issuance costs on short-term borrowings | (1,297) | 0 | 0
Proceeds on issuance of stock for employee stock purchase plan | 1,024 | 765 | 798
Cash paid for repurchase of common stock | (161,395) | (149,687) | (12,572)
Cash paid for shares withheld for taxes | (5,328) | (8,105) | (8,452)
Contingent consideration paid | 0 | 0 | (20,058)
Repayment of mortgage principal | (578) | (550) | (523)
Net cash used in financing activities | (167,194) | (157,715) | (103,757)
Effect of foreign currency exchange rates on cash | (3,571) | 3,263 | (5,266)
Net change in cash and cash equivalents | 159,722 | 138,206 | 45,808
Cash and cash equivalents at beginning of period | 429,970 | 291,764 | 245,956
Cash and cash equivalents at end of period | 589,692 | 429,970 | 291,764
Cash paid during the period for |  |  |
Income taxes, net of refunds of $3,824, $23,133 and $17,132, as of March 31, 2019, 2018 and 2017, respectively | 53,657 | 14,407 | 14,099
Interest | 3,811 | 3,774 | 5,494
Non-cash investing and financing activities: |  |  |
Accrued for purchases of property and equipment | 1,789 | 2,020 | 1,101
Accrued for asset retirement obligations | 4,706 | 1,359 | 2,359
Accrued for shares withheld for taxes | $ 0 | $ 171 | $ 0

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- Definition Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3521-108585 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
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- Definition Amount of cash outflow, not made soon after acquisition date of business combination, to settle contingent consideration liability up to amount recognized at acquisition date, including, but not limited to, measurement period adjustment and less amount paid soon after acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 + Details
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- Definition Amount of cash outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3291-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 25 -Paragraph 19A -URI http://asc.fasb.org/extlink&oid=107668666&loc=SL79513924-113897 + Details
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585 + Details
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- Definition The cash inflow from a borrowing having initial term of repayment within one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3255-108585 + Details
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