Consolidated Balance Sheets [Parenthetical] - $ / shares	Jun. 30, 2015	Dec. 31, 2014
Preferred stock, par value (in dollars per share)	$ 4	$ 4
Preferred stock, liquidation preference (in dollars per share)	$ 1,000	$ 1,000
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	5,715	14,738
Preferred stock, shares outstanding (in shares)	5,715	14,738
Common stock, par value (in dollars per share)	$ 4	$ 4
Common stock, shares authorized (in shares)	10,000,000	10,000,000
Common stock, shares issued (in shares)	1,403,647	350,622
Common stock, shares outstanding (in shares)	1,403,647	350,622