XML 24 R50.htm IDEA: XBRL DOCUMENT v2.4.0.8
Borrowings (Narrative) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 1 Months Ended 3 Months Ended
Nov. 30, 2011
Mar. 31, 2014
item
Mar. 31, 2013
Borrowings [Abstract]      
Principal amount of convertible notes $ 152,000    
Interest rate 5.50%    
Debt instrument periodic payment payable in cash semi-annually on June 15 and December 15 of each year    
Converted number of common stock shares   69.9032  
Conversion ratio per $1 of principal   1  
Convertible note, conversion rate per share   $ 14.31  
Amount of notes converted   0 42,060
Number shares that the notes are convertible   876,000  
Debt maturity date   Dec. 15, 2016  
Notes issued with an effective yield   5.96%  
Original issue discount   98.00%  
Convertible notes capitalized costs   6,634  
Proceeds from issuance of notes   $ 145,366  
Redeemable convertible securities maximum, shares   1,118,000  
Redeemable convertible securities price per share   $ 11.22