XML 29 R35.htm IDEA: XBRL DOCUMENT v2.4.1.9

Commitments and Contingencies (Details 2) (USD $) In Millions, unless otherwise specified	0 Months Ended
	Mar. 16, 2015	Mar. 31, 2015
Termination of Employment Agreement
Charges in connection with termination of employment agreement	$ 3.0int_SeveranceTerminationCosts
Non-cash expenses related to stock award compensation	0.8int_SeveranceCostsNonCash
Accrued expenses and other current liabilities
Termination of Employment Agreement
Unpaid amout of cash portion of charges related to termination of employment agreement		1.0int_SeveranceCostsCashAccrual / us-gaap_BalanceSheetLocationAxis = int_AccruedExpensesAndOtherCurrentLiabilitiesMember
Other long-term liabilities
Termination of Employment Agreement
Unpaid amout of cash portion of charges related to termination of employment agreement		$ 2.0int_SeveranceCostsCashAccrual / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentLiabilitiesMember

X

- Definition

Represents the unpaid amount of cash severance expenses for special or contractual termination benefits provided to current employees terminated under a severance arrangement.

+ References

No definition available.

+ Details

Name:	int_SeveranceCostsCashAccrual
Namespace Prefix:	int_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Represents the amount of non-cash expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a severance arrangement.

+ References

No definition available.

+ Details

Name:	int_SeveranceCostsNonCash
Namespace Prefix:	int_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Amount of expenses for special or contractual termination benefits provided to current employees terminated under a severance arrangement.

+ References

No definition available.

+ Details

Name:	int_SeveranceTerminationCosts
Namespace Prefix:	int_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_BalanceSheetLocationAxis=int_AccruedExpensesAndOtherCurrentLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: