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Consolidated Statements of Cash Flows (USD $) | 12 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013 | Mar. 31, 2012
Cash flows from operating activities: |  |  |  |
Net income | $ 9,000,000 | $ 8,450,000 | $ 7,919,000 |
Depreciation and amortization | 3,844,000 | 3,432,000 | 2,215,000 |
Gain on dispositions, net | (420,000) |  |  |
Deferred income taxes | (43,000) | (291,000) | (258,000) |
Stock-based compensation | 840,000 | 1,112,000 | 464,000 |
Impairment of intangible asset |  |  | 350,000 |
Contingent consideration | (1,020,000) |  |  |
Change in assets and liabilities, net of effects of acquisitions and dispositions |  |  |  |
Accounts receivable, net | 697,000 | (1,510,000) | 493,000 |
Inventories, net | (1,300,000) | (228,000) | 1,276,000 |
Prepaid expenses and other | (1,479,000) | (189,000) | 38,000 |
Accounts payable | 754,000 | 437,000 | (150,000) |
Accrued liabilities and taxes payable | 1,192,000 | 189,000 | 142,000 |
Unearned revenues | 308,000 |  |  |
Net cash provided by operating activities | 12,373,000 | 11,402,000 | 12,489,000 |
Cash flows from investing activities: |  |  |  |
Acquisitions | (22,758,000) | (16,660,000) | (737,000) | [1]
Proceeds from disposition | 661,000 |  |  |
Purchases of property, plant and equipment | (1,041,000) | (908,000) | (683,000) |
Net cash used in investing activities | (23,138,000) | (17,568,000) | (1,420,000) |
Cash flow from financing activities: |  |  |  |
Proceeds from the issuance of debt | 21,000,000 | 11,000,000 |  |
Payments on debt | (8,500,000) | (7,000,000) | (6,500,000) |
Dividends | (1,989,000) | (1,815,000) | (1,645,000) |
Proceeds from the exercise of stock options | 1,845,000 | 898,000 | 1,318,000 |
Purchase and retirement of common stock | (22,000) | (102,000) | (597,000) |
Net cash provided by (used in) financing activities | 12,334,000 | 2,981,000 | (7,424,000) |
Net increase (decrease) in cash and cash equivalents | 1,569,000 | (3,185,000) | 3,645,000 |
Cash and cash equivalents at beginning of year | 4,006,000 | 7,191,000 | 3,546,000 |
Cash and cash equivalents at end of year | 5,575,000 | 4,006,000 | 7,191,000 |
Cash paid during the year for: |  |  |  |
Income taxes | 4,714,000 | 4,778,000 | 4,457,000 |
Cash paid for interest | 133,000 | 116,000 | 176,000 |
Supplemental non-cash activity: |  |  |  |
Employee loans issued for exercise of stock options |  | 203,000 | 396,000 |
Repayment of employee loans for stock options | 92,000 | 450,000 | 437,000 |
Contingent consideration as part of an acquisition | $ 500,000 | $ 2,140,000 |  |
[1] | In December 2011, we settled the $600 holdback amount from our acquisition of the assets of Apex Laboratories, Inc. by paying $562 and returning $38 of accounts receivable.

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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- 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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