Does even-steven mean that one doesn't owe anything more?

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English Language Tests, Intermediate level

ESL/EFL Test #343 "English Slang Idioms (64)", question 7

"Thanks for paying me the five bucks you owed me for dinner. We're even-......... now," Mark said to Kurt.

(a) steven
(b) handed
(c) out
(d) level

English Language Tests, Intermediate level

ESL/EFL Test #343 "English Slang Idioms (64)", answer 7

"Thanks for paying me the five bucks you owed me for dinner. We're even-steven now," Mark said to Kurt.

Correct answer: (a) steven

Your answer was: correct
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Does even-steven mean that one doesn't owe anything more?

[Our Tort System]

Yes, here's the definition: http://www.thefreedictionary.com/even-steven
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"He who tries to establish his point by much yelling shows that his reasoning is weak"
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