Earnings Per Share - Earnings (Loss) Per Common Share (Detail) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Earnings per common share-basic:
Continuing Operations	$ 0.40	$ 0.59	$ 0.94	$ 1.17
Discontinued Operations	0	0	0	0.38
Total Earnings Per Common Share—Basic	0.40	0.59	0.94	1.55
Earnings per common share- diluted:
Continuing Operations	0.39	0.58	0.92	1.14
Discontinued Operations	0	0	0	0.37
Total Earnings Per Common Share—Diluted	$ 0.39	$ 0.58	$ 0.92	$ 1.51