Common Stock (Reconciliation of Common Shares Issued and Additional Disclosures) (Details)		12 Months Ended
	Nov. 09, 2009 series $ / shares shares	Dec. 31, 2016 $ / shares shares	Dec. 31, 2015 $ / shares shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Common stock, shares authorized (in shares)	80,000,000	80,000,000	80,000,000
Common stock, par value (in dollars per share) | $ / shares	$ 0.0001	$ 0.0001	$ 0.0001
Preferred stock. shares authorized (in shares)	100,000	100,000	100,000
Preferred stock, minimum number of series authorized | series	1
Preferred stock, par value (in dollars per share) | $ / shares	$ 0.0001	$ 0.0001	$ 0.0001
Shares issued at the beginning of the year (in shares)		56,220,214	54,633,726
Sale of common stock, net of issuance cost (in shares)		2,450,339	0
Issued in acquisitions (in shares)		247,764	60,024
Issued in payment of accrued liability (in shares)		20,000	0
Issued as restricted stock award grants (in shares)		632,240	758,904
Issued upon exercise of stock options (in shares)		114,112	767,560
Shares issued at the end of the year (in shares)		59,684,669	56,220,214