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INCOME TAXES (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2013 | Mar. 31, 2012 | Mar. 31, 2011
Reconciliation of unrecognized tax benefits [Roll Forward] |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  |  |  | $ 316,000 |  |  |  | $ 719,000 | $ 316,000 | $ 719,000 | $ 461,000
Additions for uncertain tax positions |  |  |  |  |  |  |  |  | 0 | 0 | 403,000
Reductions to uncertain tax positions |  |  |  |  |  |  |  |  | 0 | (403,000) | (145,000)
Ending balance | 316,000 |  |  |  | 316,000 |  |  |  | 316,000 | 316,000 | 719,000
Unrecognized tax benefits that would impact effective tax rate | 434,000 |  |  |  | 424,000 |  |  |  | 434,000 | 424,000 |
Interest on income taxes expense included in statement of operation |  |  |  |  |  |  |  |  | 17,000 | 31,000 |
Accrued interest on income taxes | 197,000 |  |  |  | 180,000 |  |  |  | 197,000 | 180,000 |
Reconciliation of income taxes to the statutory rate [Abstract] |  |  |  |  |  |  |  |  |  |  |
Statutory federal income tax rate (in hundredths) |  |  |  |  |  |  |  |  | 35.00% | 35.00% | 35.00%
Income tax expense computed at the U.S. statutory federal rate |  |  |  |  |  |  |  |  | 20,555,000 | 13,850,000 | 14,199,000
State income tax expense - net of federal benefit |  |  |  |  |  |  |  |  | 2,894,000 | 2,096,000 | 1,861,000
Non-deductible executive compensation |  |  |  |  |  |  |  |  | 150,000 | 152,000 | 81,000
Other |  |  |  |  |  |  |  |  | 316,000 | 109,000 | 700,000
Provision for income taxes |  |  |  |  |  |  |  |  | 23,915,000 | 16,207,000 | 16,841,000
Effective income tax rate (in hundredths) |  |  |  |  |  |  |  |  | 40.70% | 41.00% | 41.50%
Current: |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | 20,041,000 | 12,266,000 | 10,604,000
State |  |  |  |  |  |  |  |  | 4,453,000 | 3,088,000 | 3,774,000
Foreign |  |  |  |  |  |  |  |  | 36,000 | 59,000 | 39,000
Total current expense |  |  |  |  |  |  |  |  | 24,530,000 | 15,413,000 | 14,417,000
Deferred: |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | (581,000) | 814,000 | 2,846,000
State |  |  |  |  |  |  |  |  | (34,000) | (20,000) | (422,000)
Total deferred expense (benefit) |  |  |  |  |  |  |  |  | (615,000) | 794,000 | 2,424,000
Provision for income taxes | 5,043,000 | 6,496,000 | 6,875,000 | 5,501,000 | 3,152,000 | 5,691,000 | 4,784,000 | 2,580,000 | 23,915,000 | 16,207,000 | 16,841,000
Deferred Tax Assets: |  |  |  |  |  |  |  |  |  |  |
Accrued vacation | 1,345,000 |  |  |  | 1,174,000 |  |  |  | 1,345,000 | 1,174,000 | 1,174,000
Provision for bad debts | 1,997,000 |  |  |  | 2,149,000 |  |  |  | 1,997,000 | 2,149,000 | 1,024,000
State net operating loss carryforward | 1,505,000 |  |  |  | 1,217,000 |  |  |  | 1,505,000 | 1,217,000 | 1,296,000
Basis difference in fixed assets | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 147,000
Book compensation on discounted stock options | 77,000 |  |  |  | 262,000 |  |  |  | 77,000 | 262,000 | 611,000
Deferred compensation | 898,000 |  |  |  | 797,000 |  |  |  | 898,000 | 797,000 | 716,000
Deferred revenue | 221,000 |  |  |  | 140,000 |  |  |  | 221,000 | 140,000 | 203,000
Foreign tax credit | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 72,000
Federal net operating loss carry forward | 168,000 |  |  |  | 111,000 |  |  |  | 168,000 | 111,000 | 0
Other accruals and reserves | 2,043,000 |  |  |  | 1,918,000 |  |  |  | 2,043,000 | 1,918,000 | 1,206,000
Gross deferred tax assets | 8,254,000 |  |  |  | 7,768,000 |  |  |  | 8,254,000 | 7,768,000 | 6,449,000
Less: valuation allowance | (1,505,000) |  |  |  | (1,217,000) |  |  |  | (1,505,000) | (1,217,000) | (1,296,000)
Net deferred tax assets | 6,749,000 |  |  |  | 6,551,000 |  |  |  | 6,749,000 | 6,551,000 | 5,153,000
Deferred Tax Liabilities: |  |  |  |  |  |  |  |  |  |  |
Basis difference in fixed assets | (491,000) |  |  |  | (378,000) |  |  |  | (491,000) | (378,000) | 0
Basis difference in operating lease items | (8,765,000) |  |  |  | (9,764,000) |  |  |  | (8,765,000) | (9,764,000) | (8,645,000)
Basis difference in tax deductible goodwill | (2,288,000) |  |  |  | (2,195,000) |  |  |  | (2,288,000) | (2,195,000) | (735,000)
Total deferred tax liabilities | (11,544,000) |  |  |  | (12,337,000) |  |  |  | (11,544,000) | (12,337,000) | (9,380,000)
Net deferred tax liabilities | (4,795,000) |  |  |  | (5,786,000) |  |  |  | (4,795,000) | (5,786,000) | (4,227,000)
State and Local Jurisdiction [Member] |  |  |  |  |  |  |  |  |  |  |
Operating Loss Carryforwards [Line Items] |  |  |  |  |  |  |  |  |  |  |
Operating loss carryforwards | $ 28,000,000 |  |  |  |  |  |  |  | $ 28,000,000 |  |
Expiration date |  |  |  |  |  |  |  |  | 2023 |  |

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