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Income Taxes - Schedule of Differences Between Federal Tax Rate and Company's Effective Tax Rate for Results of Continuing Operations (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Income Taxes [Abstract] |  |  |
U.S. tax at statutory rate | $ 12,926 | $ 12,294 | $ 10,415
State income taxes, net of federal benefit | 1,408 | 1,688 | 1,814
Deductible losses | 0 | 0 | (98)
Non-deductible expenses | 319 | 292 | 105
Total income tax provision for continuing operations | $ 14,653 | $ 14,274 | $ 12,236
U.S. tax at statutory rate | 35.00% | 35.00% | 35.00%
State income taxes, net of federal benefit | 3.80% | 4.80% | 6.10%
Deductible losses | 0.00% | 0.00% | (0.30%)
Nondeductible expenses | 0.90% | 0.80% | 0.30%
Total | 39.70% | 40.60% | 41.10%

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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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