Significant Accounting Policies - EPS (Details) - $ / shares		3 Months Ended		9 Months Ended
	Sep. 07, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Aug. 31, 2018	Dec. 31, 2017
Schedule of reconciliation of shares used to calculate basic and diluted earnings per share
Common stock, shares authorized		32,000,000		32,000,000			32,000,000
Common stock, par value		$ 0.01		$ 0.01			$ 0.01
Common stock, shares issued		21,707,599		21,707,599			11,167,425
Common stock, shares outstanding		21,707,599		21,707,599			11,167,425
Preferred stock, shares authorized		8,000,000		8,000,000			8,000,000
Preferred stock, shares issued		0		0			0
Preferred stock, shares outstanding		0		0			0
Dividends declared, per share						$ 0.50
Dividends paid, per share	$ 0.50
Antidilutive stock options		681	0	583	0
Weighted average shares outstanding used to compute basic earnings per share		17,799,000	10,701,000	13,141,000	10,671,000
Incremental shares issuable upon the assumed exercise of stock options			38,000		38,000
Unvested restricted stock and restricted stock units			471,000		465,000
Shares used to compute diluted earnings (loss) per share		17,799,000	11,210,000	13,141,000	11,174,000