CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CONSOLIDATED STATEMENTS OF OPERATIONS
REVENUES	$ 700,001	$ 651,088
OPERATING EXPENSES	687,276	660,988
OPERATING INCOME (LOSS)	12,725	(9,900)
OTHER INCOME (COSTS)
Interest and dividend income	526	274
Interest and other related financing costs	(2,059)	(1,315)
Other, net	(2,201)	(1,706)
TOTAL OTHER INCOME (COSTS)	(3,734)	(2,747)
INCOME (LOSS) BEFORE INCOME TAXES	8,991	(12,647)
INCOME TAX BENEFIT	(963)	(5,240)
NET INCOME (LOSS)	$ 9,954	$ (7,407)
EARNINGS (LOSS) PER COMMON SHARE
Basic (in dollars per share)	$ 0.39	$ (0.29)
Diluted (in dollars per share)	$ 0.37	$ (0.29)
AVERAGE COMMON SHARES OUTSTANDING
Basic (in shares)	25,642,871	25,684,475
Diluted (in shares)	26,596,376	25,684,475
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.08	$ 0.08