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Document List
10-K
EX-10.20
EX-10.21
EX-21
EX-23
EX-31.(A)
EX-31.(B)
EX-32.(A)
EX-32.(B)
EX-101.INS
EX-101.SCH
EX-101.CAL
EX-101.DEF
EX-101.LAB
EX-101.PRE
Operating Segments (Narrative) (Details)
12 Months Ended
Dec. 31, 2014
segment
Operating Segments [Abstract]
Number of principal segments
5