ACQUISITIONS OF BUSINESSES - Unaudited Proforma Net Revenue and Net Income from Continuing Operations (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2013	Jun. 30, 2013
ACQUISITIONS OF BUSINESSES [Abstract]
Net revenues	$ 69,563	$ 135,024
Net income attributable to common shareholders from continuing operations	$ 5,717	$ 9,750
Earnings per share [Abstract]
Basic - net income attributable to common shareholders from continuing operations (in dollars per share)	$ 0.47	$ 0.81
Diluted - net income attributable to common shareholders from continuing operations (in dollars per share)	$ 0.47	$ 0.81
Shares used in computation [Abstract]
Basic - net income attributable to common shareholders from continuing operations (in shares)	12,089	12,022
Diluted - net income attributable to common shareholders from continuing operations (in shares)	12,110	12,044

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma income from continuing operations before changes in accounting and extraordinary items, net of tax effect, for the period as if the business combination or combinations had been completed at the beginning of a period.

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The weighted average number of shares or units and dilutive common stock or unit equivalents outstanding in the calculation of proforma diluted earnings per share (earnings per unit), which is commonly presented in initial public offerings based on the terms of the offering.

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