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PARENT COMPANY CONDENSED FINANCIAL STATEMENTS: (Details 1) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Financial Statements, Captions [Line Items]
Income tax benefit									$ (11,145)	$ (20,622)	$ (19,883)
NET INCOME	$ 11,056	$ 11,313	$ 15,261	$ 8,953	$ 2,616	$ 8,794	$ 8,352	$ 9,369	46,583	29,131	38,413
Comprehensive Income (Loss), Net of Tax, Attributable to Parent									40,199	28,591	33,650
Parent
Condensed Financial Statements, Captions [Line Items]
Dividends from subsidiaries									13,651	30,814	31,781
Other income									720	720	722
Other operating expenses									(2,814)	(2,647)	(2,581)
Income before income taxes and equity in undistributed earnings of subsidiaries									11,557	28,887	29,922
Income tax benefit									934	889	821
Income before equity in undistributed earnings of subsidiaries									12,491	29,776	30,743
Equity in undistributed earnings of subsidiaries									34,092	(645)	7,670
NET INCOME									$ 46,583	$ 29,131	$ 38,413

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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