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CASH FLOW INFORMATION - Stock-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands								12 Months Ended
	May 15, 2018	Feb. 27, 2018	May 17, 2017	Mar. 23, 2017	Oct. 13, 2016	May 18, 2016	Feb. 17, 2016	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Restricted Stock | Peter C. Georgiopoulos, Chairman of Board
Non-cash investing and financing activities
Granted (in shares)					68,581
Vested (in shares)					68,581
2015 EIP Plan | Restricted Stock Units
Non-cash investing and financing activities
Granted (in shares)		37,346						51,704	317,595	66,666
Aggregate fair value		$ 512
Vested (in shares)								122,663	164,132	5,821
2015 EIP Plan | Restricted Stock Units | John C. Wobensmith
Non-cash investing and financing activities
Granted (in shares)				292,398
Aggregate fair value				$ 3,254
2015 EIP Plan | Restricted Stock Units | Directors
Non-cash investing and financing activities
Granted (in shares)	14,268		25,197			66,666
Aggregate fair value	$ 255		$ 255			$ 340
Vested (in shares)	25,197		66,666				2,328
2015 EIP Plan | Stock Options
Non-cash investing and financing activities
Options to purchase (in shares)		122,608						122,608	133,000
Exercise price		$ 13.69						$ 13.69	$ 11.13
Aggregate fair value		$ 926
2015 EIP Plan | Stock Options | John C. Wobensmith
Non-cash investing and financing activities
Options to purchase (in shares)				133,000
Exercise price				$ 11.13
Aggregate fair value				$ 853
2015 EIP Plan | Restricted Stock
Non-cash investing and financing activities
Granted (in shares)										61,224
Vested (in shares)								6,802	6,803	47,619
2015 EIP Plan | Restricted Stock | Peter C. Georgiopoulos, Chairman of Board
Non-cash investing and financing activities
Granted (in shares)							40,816
Vested (in shares)										40,816
2015 EIP Plan | Restricted Stock | John C. Wobensmith
Non-cash investing and financing activities
Granted (in shares)							20,408
2015 EIP Plan | Restricted Stock | Executive Officers
Non-cash investing and financing activities
Aggregate fair value							$ 318

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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