CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
CONSOLIDATED STATEMENTS OF OPERATIONS
REVENUES	$ 676,627	$ 696,115	$ 1,298,082	$ 1,309,391
OPERATING EXPENSES	659,973	662,649	1,290,693	1,274,645
OPERATING INCOME	16,654	33,466	7,389	34,746
OTHER INCOME (COSTS)
Interest and dividend income	387	271	788	505
Interest and other related financing costs	(1,231)	(1,025)	(2,478)	(2,027)
Other, net	571	197	937	597
TOTAL OTHER INCOME (COSTS)	(273)	(557)	(753)	(925)
INCOME BEFORE INCOME TAXES	16,381	32,909	6,636	33,821
INCOME TAX PROVISION	6,150	12,942	2,508	13,109
NET INCOME	$ 10,231	$ 19,967	$ 4,128	$ 20,712
EARNINGS PER COMMON SHARE
Basic (in dollars per share)	$ 0.39	$ 0.76	$ 0.16	$ 0.79
Diluted (in dollars per share)	$ 0.39	$ 0.74	$ 0.16	$ 0.77
AVERAGE COMMON SHARES OUTSTANDING
Basic (in shares)	25,791,026	26,021,874	25,806,774	26,036,375
Diluted (in shares)	26,246,868	26,593,451	26,295,683	26,592,615
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.08	$ 0.06	$ 0.16	$ 0.12