NON-CONTROLLING INTEREST: (Details)	Dec. 31, 2013
NON-CONTROLLING INTEREST:
Investment shareholders' interest in Peruvian Branch (as a percent)	0.71%

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

No definition available.

Name:	us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant