Preferred Stock (Tables)

6 Months Ended

Jun. 30, 2018

Stockholders' Equity Note [Abstract]

Components of Dividends Declared and in Kind Dividends Deemed on Preferred Stock

	Three months ended June 30,				Six months ended June 30,
	2018		2017		2018		2017
Preferred D dividends accrued at stated rate	$	-	$	-	$	-	$	650
Preferred D inducement to convert		-		127		-		11,030
Preferred E dividends accrued at stated rate		145		144		289		194
Dividends declared and in kind dividends deemed on preferred stock	$	145	$	271	$	289	$	11,874