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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2012
Operating activities: |  |  |
Net income | $ 36,877 | $ 24,008 | $ 17,188
Adjustments to reconcile net income to net cash provided by operating activities, net of effects of acquisitions : |  |  |
Depreciation and amortization | 18,518 | 12,782 | 11,485
Stock-based compensation expense | 5,688 | 3,831 | 3,504
Deferred income taxes | (3,852) | 1,932 | 83
Allowance for uncollectible accounts | (159) | 714 | 24
Impairment of Intangible Assets, Finite-lived | 0 | 255 | 0
(Gain) loss on sale of property, plant and equipment | 109 | (1) | (158)
Other | 208 | 163 | 65
Changes in operating assets and liabilities increasing (decreasing) cash, net of effects from acquisitions: |  |  |
Accounts receivable | (31,395) | (32,408) | (4,575)
Costs and estimated earnings in excess of billings on uncompleted contracts | 13,540 | (5,211) | (28,506)
Inventories | (11) | (1,394) | (233)
Other assets | (1,379) | (2,194) | (1,888)
Accounts payable | 29,234 | 19,256 | 12,862
Billings on uncompleted contracts in excess of costs and estimated earnings | 3,142 | 32,555 | (5,192)
Accrued expenses | 6,468 | 2,796 | (1,718)
Net cash provided by operating activities | 76,988 | 57,084 | 2,941
Investing activities: |  |  |
Acquisition of property, plant and equipment | (23,589) | (23,231) | (13,534)
Acquisition | (51,607) | (9,394) | 0
Acquisition related adjustment | 0 | 0 | 241
Proceeds from asset sales | 553 | 186 | 598
Net cash used for investing activities | (74,643) | (32,439) | (12,695)
Financing activities: |  |  |
Exercise of stock options | 1,175 | 875 | 167
Capital lease payments | 0 | (42) | (258)
Excess tax benefit of exercised stock options and vesting of deferred shares | 1,730 | 37 | 0
Advances under credit agreement | 87,826 | 25,565 | 9,105
Repayments of advances under credit agreement | (76,205) | (25,565) | (9,105)
Payment of debt amendment fees | (657) | 0 | (643)
Treasury shares sold to Employee Stock Purchase Plan | 136 | 54 | 47
Open market purchase of treasury shares | 0 | 0 | (8,126)
Other treasury share purchases | (1,776) | (1,162) | (537)
Net cash used by financing activities | 12,229 | (238) | (9,350)
Effect of exchange rate changes on cash | (1,209) | (383) | (527)
Net increase (decrease) in cash and cash equivalents | 13,365 | 24,024 | (19,631)
Cash and cash equivalents, beginning of period | 63,750 | 39,726 | 59,357
Cash and cash equivalents, end of period | 77,115 | 63,750 | 39,726
Other cash flow information: |  |  |
Income taxes | 19,160 | 12,242 | 12,016
Interest | 1,224 | 610 | 478
Non-cash investing: |  |  |
Purchases of property, plant and equipment on account | $ 527 | $ 1,146 | $ 457

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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The cash inflow associated with the amount received from the stock plan during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=31814832&loc=SL4591552-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=31814832&loc=SL4591551-111686 + Details
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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 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: 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 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 the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, 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 + Details
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- Definition The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the 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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